JPH0329257Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a webbing intermediate portion support device for supporting a webbing intermediate portion to a vehicle body, which is used in a seat belt device for protecting an occupant in a vehicle emergency.

[Background Art] Among seat belt devices, in those using continuous webbing, an intermediate portion of the webbing extending from the shoulder restraining portion of the occupant to the retracting device is supported by a slip joint to the side wall of the vehicle body. This slip joint allows the intermediate portion of the webbing to be freely moved in its longitudinal direction, allowing the occupant to change his or her driving position.

In addition, this slip joint has a strong structure and is securely attached to the side wall of the vehicle body in order to reliably transmit the large tension generated in the webbing due to the inertial force of the occupant to the vehicle body in the event of a vehicle emergency.

For this reason, when a passenger, child passenger, etc. with a significantly smaller physique than a normal physique wears the webbing, the webbing may be placed in an unnatural position or the passenger seat need to be moved significantly.

[Purpose of the invention] Taking the above facts into consideration, the present invention provides a support for the middle part of the webbing that can shift the anchor point of the shoulder restraint part of the webbing downwards even when an occupant smaller than the normal size is seated. The purpose is to obtain equipment.

[Structure of the invention] In the webbing intermediate support device according to the invention,
A slip joint in which a webbing intermediate insertion hole is formed and is locked to the side wall of the vehicle body, a locking means for rotatably locking the slip joint to the side wall of the vehicle body, and a locking means centered on the locking means. It is rotatable and can be used to wrap the webbing from the slip joint to the shoulder restraint part, and when the webbing is wrapped, the anchor point of the shoulder restraint part of the webbing is changed downward and the webbing is moved in the longitudinal direction of the vehicle body. A swingable long winding rod is provided, and by winding the webbing from the slip joint to the passenger around this long winding rod, the anchor point of the shoulder restraint part can be changed. In addition, when the seat is moved forward with webbing wrapped around the winding rod, the long winding rod rotates relative to the slip joint, causing the webbing to change its path. The elongated winding rod follows the webbing, making it difficult for the webbing to come off the winding rod, making it difficult for the webbing to twist, and reducing the feeling of pressure on the occupant when moving the seat.

[Embodiment of the invention] FIG. 1 shows a seat belt device to which a webbing intermediate portion support device 10 according to the present embodiment is applied.

In this seat belt device, an occupant 16 seated on a seat 14 is restrained by webbing 12 in the event of a vehicle emergency. This webbing 1
One end of the webbing 2 is locked to an anchor plate 20 fixed to the side wall 18 of the vehicle body, and the middle part is folded back to the tongue plate 22 and the webbing intermediate part support device 10, and then wound up to a winding device 24.

This winding device 24 is attached to the side wall 18 of the vehicle body, and winds up one end of the webbing 12 with a biasing force, but has a built-in inertia lock mechanism that instantly stops unwinding of the webbing 12 in case of a vehicle emergency.

The tongue plate 22 is also engageable with a buckle device 26, which is fixed to a tunnel portion 28 protruding from the floor at the approximate center of the vehicle and stands upright on the side of the seat 14.

Second regarding the webbing intermediate portion support device 10,
This will be explained in detail with reference to FIG.

This webbing intermediate portion support device 10 is provided with a webbing winding ring 30 as a slip joint similar to the conventional one, on which the webbing 12 pulled out from the winding device 24 is wound. In other words, the webbing ring 30
The axis of a rod having a circular cross section is bent into an ellipse, one side of which is the webbing wrapping part 30A,
A connecting plate 32 is fixed to the other side. A bolt 34 serving as a locking means passes through the connecting plate 32, and the webbing winding ring 30 is attached to the vehicle body side wall 18 by screwing the bolt 34 into the vehicle body side wall 18. A spacer 36 is interposed between the connecting plate 32 and the vehicle body side wall 18, so that the connecting plate 32 and the webbing ring 30 can rotate around the bolt 34.

A U-shaped bent end 38A of a bar 38 is suspended from the spacer 36 so as to be rotatable around the bolt 34. As shown in FIG. 3, this bar 38 is substantially vertical from the center to the end 38A when attached to the vehicle body, and is bent in the direction away from the vehicle body side wall 18 from the center to the other end. ing. Further, one end of a long webbing winding rod 40 having a substantially J-shape is connected to the other end as shown in FIGS. 2 and 4.
This webbing winding rod 40 is arranged toward the passenger, that is, toward the side opposite to the vehicle body side wall 18 from the middle part of the webbing 12 extending from the winding device 24 to the webbing winding ring 30. However, the webbing 12 that is folded back by the webbing winding ring 30 and reaches the take-up device 24 is arranged inside the webbing winding bar 40 in the normal use state of the vehicle. Webbing 12 extending from this webbing winding ring 30 to the passenger
If necessary, the occupant can wrap the webbing around the webbing hanging rod 40 and arrange the webbing around the webbing hanging rod 40 toward the side wall 18 of the vehicle body, as shown by the two-dot chain line in FIG.

The operation of this embodiment configured in this way will be explained. After the occupant 16 is seated on the seat 14, by engaging the tongue plate 22 with the buckle device 26, the occupant 16 can be fitted with a three-point seat belt device as shown in FIG. That is, the webbing 12 between the anchor plate 20 and the tongue plate 22 acts as a waist restraint for the occupant, and the webbing 12 between the tongue plate 22 and the webbing intermediate support device 10 acts as a shoulder restraint for the occupant.

In the event of a vehicle emergency, a large tension is generated in the webbing 12 due to the inertia of the occupant 16, but this tension is reliably transmitted to the vehicle body side wall 18 via the webbing winding ring 30 and the connecting plate 32, so that the occupant can be kept in a restrained state. .

In addition, when a different passenger than usual rides the vehicle, the webbing winding ring 30 is connected to the tongue plate 22.
If the middle part of the webbing 12 leading to the webbing 12 is wound around the webbing winding rod 40 as shown by the two-dot chain line in FIGS. I can do it. In addition, since the webbing hanging rod 40 is swingable in the longitudinal direction of the vehicle body, when the occupant moves the seat toward the front of the vehicle body while the webbing is wrapped, the webbing hanging rod 40 follows the path of the webbing 12. The webbing 12 can be made difficult to come off from the webbing rod 40, and the feeling of pressure on the occupant when moving the seat can be reduced. Further, by rotating the webbing winding rod 40 relative to the webbing winding ring 30 and widening the angle between the webbing winding rod 40 and the webbing winding ring 30, the webbing 12 is moved to the webbing winding rod 4.
It is possible to improve workability when winding the wire around zero.

In this case, when the vehicle falls into an emergency state, the tension acting on the webbing 12 is supported by the vehicle body side wall 18 via the bar 38 and the bolt 34, so that the restraint of the occupant is similarly ensured.

In addition, in this embodiment, as shown by the two-dot chain line in FIG. 4, a webbing winding rod 40 may be additionally provided so that the anchor point can be changed in multiple stages.

Next, FIG. 6 shows a second embodiment of the present invention, in which a long plate 42 is used in place of the bar 38 in the previous embodiment. This plate material 42 has an L-shape as a whole, with a circular hole 44 formed at one end through which the bolt 34 passes, and an upright section extending from the middle part to the other end so that the cross-sectional shape is L-shaped. The installation piece 46 is bent.

Therefore, in this embodiment as well, the long plate material 42
The other end can form a webbing rod to obtain the same effect as in the previous embodiment.

[Effects of the invention] As explained above, in the webbing intermediate part support device according to the invention, in addition to the slip joint, a long winding rod rotatable around the mounting bolt of the slip joint is formed, so that the webbing It is an excellent design that can reliably transmit tension to the vehicle body, and also allows the anchor point of the shoulder restraint part of the webbing to be moved downward as necessary, and reduces the feeling of pressure on the occupant when moving the seat. have an effect.

[Brief explanation of the drawing]

FIG. 1 is a front view from the side of a vehicle showing a seat belt device to which the webbing intermediate support device according to the present invention is applied, FIG. 2 is a partially enlarged view of FIG. 1,
3 is a sectional view taken along the line shown in FIG. 2, FIG. 4 is a front view showing the bar 38 of the first embodiment, and FIG. 5 is a perspective view showing the second embodiment of the present invention. 10... Webbing intermediate part support device, 12...
Webbing, 18... Vehicle body side wall, 24... Winding device, 30... Webbing winding ring, 38... Bar material, 40... Webbing winding rod, 42... Board material.

Claims (1)

[Scope of utility model registration request] This is a webbing intermediate part support device that supports the webbing intermediate part from the shoulder restraint part of the occupant to the take-up device to the vehicle body, and includes a slip joint in which a webbing intermediate part insertion hole is formed and is latched to the vehicle body side wall, and this slip joint. A locking means for rotatably locking the joint to a side wall of the vehicle body, and the locking means is rotatable around the locking means, and a webbing extending from the slip joint to the shoulder restraint portion can be wrapped around the locking means. A webbing characterized by having a long winding rod that changes the anchor point of the shoulder restraint part of the webbing downward when the webbing is wound, and is capable of swinging in the longitudinal direction of the vehicle body following the webbing. Intermediate support device.